Perforating-machine.



No. 759,071. Y PATENTED MAY 3, 1904.

v R. T. BROOKS. PERPORATING MACHINE.

' APPLIOATIOH FILED SEPT. 22, 1903.

N0 MODEL.

UNITED STATEs Patented May 3, 1904:.

PATENT OEEIcE. I

RICHARDS T. BROOKS, OF SI/VARTHMORE, PENNSYLVANIA, ASSIGNOR TO KEYSTONETYPE FOUNDRY, OF PHILADELPHIA, PENNSYLVANIA, A

FIRM.

PERFORATING-NIACHINE.

SPECIFICATION forming part of Letters Patent No. 7 59,07 1, dated May 3,1904.

Application filed September 22, 1903. Serial No. 174,208. (No model.)

To all 1.077.011?) it may concern:

Be it known that I, RICHARDS T. BROOKS, a citizen of the United States,residing at Swarthmore, in the county of Delaware, State ofPennsylvania, have invented new and useful Improvements inPerforating-lvlachines, of which the following is a specification.

My invention relates to a machine for perforating paper; and it consistsof means for adjusting the perforating-blade employed to cause an evenpiercing of the paper and greater or less penetration.

Figure 1 represents a plan view of a portion of a perforating-machineembodying my invention. Fig. 2 represents an end elevation thereof,partly in section. Fig. 3 represents a partial end elevation and partialsection on line in m, Fig. 1.

Similar numerals of reference indicate corresponding parts in thefigures.

Referring to the drawings, 1 designates a rotary head consisting of thecollar 2 and the arms 3 radiating therefrom, said head being properlysecured to a suitable shaft, which is shown in dotted lines, Fig. 1. Onthe extremity of each arm is a flange 1 and a boss 5 at a right angle toeach other. In said flange is the slot 6, and passing through said bossis the set-screw 7, which, as is evident, is at a right angle to saidslot.

8 designates a sliding bar which extends in the transverse direction ofthe machine and rests against the flange 41, to which it is secured bymeans of bolts 9, which pass freely through the slot 6 and are screwedto said bar 8. The outer side of said bar is recessed, as at 10, andreceives the blade 11, which is pro vided with serrations or teeth 12for perforating purposes, said blade being secured to said bar by meansof the screws 13. The

screw 7 is adapted to engage the head or inner end of the bar 8 andtighten against the same.

The operation is as follows: The bolts 9 are loosened and the screw 7turned to the extent required to set the teeth 12 uniformly and at aproper distance from the center of the head 1 relatively to the degreeof penetration required. The bolt-s 9 are then tightened against the bar8, whereby, as is evident, the blade reliably retains its set positionand may be further adjusted, if required, simply by loosening the bolts9, operating the screw 7 in the proper direction, and again tighteningsaid bolts and screw. Power is applied to the shaft of the head in anysuitable manner, and as the head rotates the teeth 12 penetrate thepaper resting on a suitable bed or table in a convenient and uniformmanner.

The tendency of the bars 8, and consequcntly of the blades 11, to shiftbackward due to any strain thereon when the teeth 12 enter the paper ormaterial is resisted by the bolts or screws 7, which bear solidlyagainst the back or inner faces of the heads of the barsS in thelongitudinal direction of the latter, said screws thus receiving thethrust of said bars, while the bolts 9 steady said bars and hold themflat and tight against the flanges 4: in the position to which they areadjusted by said screws 7.

Various changes may be made in the details of construction shown withoutdeparting from the general spirit of my invention, and I do not,therefore, desire to be limited in each case to the same.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a paper-perforating machine, a rotatable head, an arm projectingradially therefrom, a slidingbar fitted to said arm, a toothed bladesecured to said. bar, a slot in said arm, a bolt passing through saidslot and engaging said bar and a set-screw on said arm engaging saidbar, said. screw being at a right angle to said bolt.

2. Ina paper-perforating machine, a rotary head, a flange and a bossthereon at a right angle to each other, a slot in said flange, a slidingbar resting on said flange, a bolt passing through said slot andengagingsaid bar, a perforating-blade on said bar and a screw passingthrough said boss into engagement with said bar.

3. In apaper-perforating machine, arotary l gaging with said bar, saidslot and set-screw head, a flange and a boss projecting therefrom beingat a right angle to each other. at a right angle to each other, aperforatingblade, a sliding bar carrying said blade, said RICHARDSBROOKS 5 bar resting on said flange, the latter having a Witnesses:

slot therein, a bolt passing through said slot JOHN A. WIEDERSHEIM, intosaid bar and a set-screw in said boss en- S. R. CARR.

